Time Shards - Tempus Fury

It's called "the Event." An unimaginable cataclysm in the 23rd century shatters 600 years of the Earth's timeline into jumbled fragments. Our world is gone: instantly replaced by a new one made of shattered remnants of the past, present and future, all existing alongside one another in a nightmare patchwork of different time "shards"-some hundreds of miles long and others no more than a few feet across.
An alliance is formed: San Diego native Amber Richardson, the young warrior Cam, the supercilious Victorian Phineas Van Seldoot, Blake-a soldier from World War II, the 1880's reporter Nelly Bly, and "Merlin, and who claims to be the time-travelling 23rd century scientist responsible for the Event. Together they reach Merlin's laboratory at the South Pole, only to discover a vortex where the doomsday machine should be. If they enter the vortex, they may find a way to restore time. Or they may die in the chaos of extra-dimensional space.